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Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -07001#include <linux/ceph/ceph_debug.h>
Sage Weil76aa8442009-10-06 11:31:14 -07002
Sage Weil06edf042009-12-15 14:44:32 -08003#include <linux/device.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +09004#include <linux/slab.h>
Sage Weil76aa8442009-10-06 11:31:14 -07005#include <linux/module.h>
6#include <linux/ctype.h>
7#include <linux/debugfs.h>
8#include <linux/seq_file.h>
9
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070010#include <linux/ceph/libceph.h>
11#include <linux/ceph/mon_client.h>
12#include <linux/ceph/auth.h>
13#include <linux/ceph/debugfs.h>
Sage Weil76aa8442009-10-06 11:31:14 -070014
Randy Dunlap6f453ed2010-09-28 09:53:10 -070015#include "super.h"
16
Sage Weil039934b2009-11-12 15:05:52 -080017#ifdef CONFIG_DEBUG_FS
18
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070019#include "mds_client.h"
Sage Weil76aa8442009-10-06 11:31:14 -070020
21static int mdsmap_show(struct seq_file *s, void *p)
22{
23 int i;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070024 struct ceph_fs_client *fsc = s->private;
Sage Weil76aa8442009-10-06 11:31:14 -070025
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070026 if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
Sage Weil76aa8442009-10-06 11:31:14 -070027 return 0;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070028 seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
29 seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
Sage Weil76aa8442009-10-06 11:31:14 -070030 seq_printf(s, "session_timeout %d\n",
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070031 fsc->mdsc->mdsmap->m_session_timeout);
Sage Weil76aa8442009-10-06 11:31:14 -070032 seq_printf(s, "session_autoclose %d\n",
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070033 fsc->mdsc->mdsmap->m_session_autoclose);
34 for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
Sage Weil76aa8442009-10-06 11:31:14 -070035 struct ceph_entity_addr *addr =
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070036 &fsc->mdsc->mdsmap->m_info[i].addr;
37 int state = fsc->mdsc->mdsmap->m_info[i].state;
Sage Weil76aa8442009-10-06 11:31:14 -070038
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070039 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
40 ceph_pr_addr(&addr->in_addr),
Sage Weil76aa8442009-10-06 11:31:14 -070041 ceph_mds_state_name(state));
42 }
43 return 0;
44}
45
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070046/*
47 * mdsc debugfs
48 */
Sage Weil76aa8442009-10-06 11:31:14 -070049static int mdsc_show(struct seq_file *s, void *p)
50{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070051 struct ceph_fs_client *fsc = s->private;
52 struct ceph_mds_client *mdsc = fsc->mdsc;
Sage Weil44ca18f2010-02-15 12:08:46 -080053 struct ceph_mds_request *req;
54 struct rb_node *rp;
Sage Weil76aa8442009-10-06 11:31:14 -070055 int pathlen;
56 u64 pathbase;
57 char *path;
58
59 mutex_lock(&mdsc->mutex);
Sage Weil44ca18f2010-02-15 12:08:46 -080060 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
61 req = rb_entry(rp, struct ceph_mds_request, r_node);
Sage Weil76aa8442009-10-06 11:31:14 -070062
Sage Weil4af25fd2010-11-02 13:41:47 -070063 if (req->r_request && req->r_session)
64 seq_printf(s, "%lld\tmds%d\t", req->r_tid,
65 req->r_session->s_mds);
66 else if (!req->r_request)
Sage Weil76aa8442009-10-06 11:31:14 -070067 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
Sage Weil4af25fd2010-11-02 13:41:47 -070068 else
69 seq_printf(s, "%lld\t(no session)\t", req->r_tid);
Sage Weil76aa8442009-10-06 11:31:14 -070070
71 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
72
73 if (req->r_got_unsafe)
74 seq_printf(s, "\t(unsafe)");
75 else
76 seq_printf(s, "\t");
77
78 if (req->r_inode) {
79 seq_printf(s, " #%llx", ceph_ino(req->r_inode));
80 } else if (req->r_dentry) {
81 path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
82 &pathbase, 0);
Dan Carpenterf44c3892010-08-26 11:07:24 +020083 if (IS_ERR(path))
84 path = NULL;
Sage Weil76aa8442009-10-06 11:31:14 -070085 spin_lock(&req->r_dentry->d_lock);
86 seq_printf(s, " #%llx/%.*s (%s)",
87 ceph_ino(req->r_dentry->d_parent->d_inode),
88 req->r_dentry->d_name.len,
89 req->r_dentry->d_name.name,
90 path ? path : "");
91 spin_unlock(&req->r_dentry->d_lock);
92 kfree(path);
93 } else if (req->r_path1) {
94 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
95 req->r_path1);
96 }
97
98 if (req->r_old_dentry) {
99 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
100 &pathbase, 0);
Dan Carpenterf44c3892010-08-26 11:07:24 +0200101 if (IS_ERR(path))
102 path = NULL;
Sage Weil76aa8442009-10-06 11:31:14 -0700103 spin_lock(&req->r_old_dentry->d_lock);
104 seq_printf(s, " #%llx/%.*s (%s)",
Sage Weil41b02e12011-07-26 11:31:14 -0700105 ceph_ino(req->r_old_dentry_dir),
Sage Weil76aa8442009-10-06 11:31:14 -0700106 req->r_old_dentry->d_name.len,
107 req->r_old_dentry->d_name.name,
108 path ? path : "");
109 spin_unlock(&req->r_old_dentry->d_lock);
110 kfree(path);
111 } else if (req->r_path2) {
112 if (req->r_ino2.ino)
113 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
114 req->r_path2);
115 else
116 seq_printf(s, " %s", req->r_path2);
117 }
118
119 seq_printf(s, "\n");
120 }
121 mutex_unlock(&mdsc->mutex);
122
123 return 0;
124}
125
Sage Weil76aa8442009-10-06 11:31:14 -0700126static int caps_show(struct seq_file *s, void *p)
127{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700128 struct ceph_fs_client *fsc = s->private;
Sage Weil85ccce42010-02-17 10:02:43 -0800129 int total, avail, used, reserved, min;
Sage Weil76aa8442009-10-06 11:31:14 -0700130
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700131 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
Sage Weil76aa8442009-10-06 11:31:14 -0700132 seq_printf(s, "total\t\t%d\n"
Sage Weil85ccce42010-02-17 10:02:43 -0800133 "avail\t\t%d\n"
134 "used\t\t%d\n"
135 "reserved\t%d\n"
136 "min\t%d\n",
137 total, avail, used, reserved, min);
Sage Weil76aa8442009-10-06 11:31:14 -0700138 return 0;
139}
140
141static int dentry_lru_show(struct seq_file *s, void *ptr)
142{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700143 struct ceph_fs_client *fsc = s->private;
144 struct ceph_mds_client *mdsc = fsc->mdsc;
Sage Weil76aa8442009-10-06 11:31:14 -0700145 struct ceph_dentry_info *di;
146
147 spin_lock(&mdsc->dentry_lru_lock);
148 list_for_each_entry(di, &mdsc->dentry_lru, lru) {
149 struct dentry *dentry = di->dentry;
150 seq_printf(s, "%p %p\t%.*s\n",
151 di, dentry, dentry->d_name.len, dentry->d_name.name);
152 }
153 spin_unlock(&mdsc->dentry_lru_lock);
154
155 return 0;
156}
157
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700158CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
159CEPH_DEFINE_SHOW_FUNC(mdsc_show)
160CEPH_DEFINE_SHOW_FUNC(caps_show)
161CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
Sage Weil76aa8442009-10-06 11:31:14 -0700162
Sage Weil76aa8442009-10-06 11:31:14 -0700163
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700164/*
165 * debugfs
166 */
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800167static int congestion_kb_set(void *data, u64 val)
168{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700169 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800170
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700171 fsc->mount_options->congestion_kb = (int)val;
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800172 return 0;
173}
174
175static int congestion_kb_get(void *data, u64 *val)
176{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700177 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800178
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700179 *val = (u64)fsc->mount_options->congestion_kb;
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800180 return 0;
181}
182
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800183DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
184 congestion_kb_set, "%llu\n");
185
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700186
187void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
Sage Weil76aa8442009-10-06 11:31:14 -0700188{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700189 dout("ceph_fs_debugfs_cleanup\n");
190 debugfs_remove(fsc->debugfs_bdi);
191 debugfs_remove(fsc->debugfs_congestion_kb);
192 debugfs_remove(fsc->debugfs_mdsmap);
193 debugfs_remove(fsc->debugfs_caps);
194 debugfs_remove(fsc->debugfs_mdsc);
195 debugfs_remove(fsc->debugfs_dentry_lru);
Sage Weil76aa8442009-10-06 11:31:14 -0700196}
197
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700198int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
Sage Weil76aa8442009-10-06 11:31:14 -0700199{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700200 char name[100];
201 int err = -ENOMEM;
Sage Weil76aa8442009-10-06 11:31:14 -0700202
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700203 dout("ceph_fs_debugfs_init\n");
204 fsc->debugfs_congestion_kb =
Sage Weil213c99e2010-08-03 10:25:11 -0700205 debugfs_create_file("writeback_congestion_kb",
206 0600,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700207 fsc->client->debugfs_dir,
208 fsc,
Sage Weil213c99e2010-08-03 10:25:11 -0700209 &congestion_kb_fops);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700210 if (!fsc->debugfs_congestion_kb)
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800211 goto out;
212
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700213 snprintf(name, sizeof(name), "../../bdi/%s",
214 dev_name(fsc->backing_dev_info.dev));
215 fsc->debugfs_bdi =
216 debugfs_create_symlink("bdi",
217 fsc->client->debugfs_dir,
218 name);
219 if (!fsc->debugfs_bdi)
220 goto out;
221
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700222 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
223 0600,
224 fsc->client->debugfs_dir,
225 fsc,
226 &mdsmap_show_fops);
227 if (!fsc->debugfs_mdsmap)
228 goto out;
229
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700230 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
231 0600,
232 fsc->client->debugfs_dir,
233 fsc,
234 &mdsc_show_fops);
235 if (!fsc->debugfs_mdsc)
236 goto out;
237
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700238 fsc->debugfs_caps = debugfs_create_file("caps",
239 0400,
240 fsc->client->debugfs_dir,
241 fsc,
242 &caps_show_fops);
243 if (!fsc->debugfs_caps)
244 goto out;
245
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700246 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
247 0600,
248 fsc->client->debugfs_dir,
249 fsc,
250 &dentry_lru_show_fops);
251 if (!fsc->debugfs_dentry_lru)
252 goto out;
Sage Weil06edf042009-12-15 14:44:32 -0800253
Sage Weil76aa8442009-10-06 11:31:14 -0700254 return 0;
255
256out:
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700257 ceph_fs_debugfs_cleanup(fsc);
258 return err;
Sage Weil76aa8442009-10-06 11:31:14 -0700259}
260
Sage Weil76aa8442009-10-06 11:31:14 -0700261
Sage Weil213c99e2010-08-03 10:25:11 -0700262#else /* CONFIG_DEBUG_FS */
Sage Weil039934b2009-11-12 15:05:52 -0800263
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700264int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
Sage Weil039934b2009-11-12 15:05:52 -0800265{
266 return 0;
267}
268
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700269void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
Sage Weil039934b2009-11-12 15:05:52 -0800270{
271}
272
Sage Weil213c99e2010-08-03 10:25:11 -0700273#endif /* CONFIG_DEBUG_FS */